diff --git a/to_opus.sh b/to_opus.sh
index 8b5297e..3381e97 100644
--- a/to_opus.sh
+++ b/to_opus.sh
@@ -14,13 +14,17 @@ function finish {
 }
 trap finish EXIT
 
-extension=''
+print_help() {
+  printf "Help: not implemented yet"
+}
 
 while getopts 'e:' flag; do
-  case "${flag}" in
-    e) extension+=("$OPTARG");;
-    *) exit 1 ;;
-  esac
+	case "${flag}" in
+		e) extension+=("$OPTARG");;
+		h) print_help
+		exit 0;;
+		*) exit 1 ;;
+	esac
 done
 
 # write array into string
@@ -41,10 +45,16 @@ for file in **/*.@($extension); do
 				print "ffmpeg -i \""file"\" -map 0:a -c:a libopus"
 			}
 			{	# https://wiki.xiph.org/Opus_Recommended_Settings
-				if($1==1) print $2>=64000 ? "-b:a:"NR-1" 64k" : "-b:a:"NR-1" "$2
-				else if($1==2) print $2>=128000 ? "-b:a:"NR-1" 128k" : "-b:a:"NR-1" "$2
-				else if($1<=6) print $2>=256000 ? "-b:a:"NR-1" 256k" : "-b:a:"NR-1" "$2
-				else print $2>=450000 ? "-b:a:"NR-1" 450k" : "-b:a:"NR-1" "$2
+				if($1==1) {
+					if($2>=64000) print "-b:a:"NR-1" 64k"
+				}
+				else if($1==2) {
+					if($2>=128000) print "-b:a:"NR-1" 128k"
+				}
+				else if($1<=6) {
+					if ($2>=256000) print "-b:a:"NR-1" 256k"
+				}
+				else if ($2>=450000) print "-b:a:"NR-1" 450k"
 			}
 			END{
 				print "\""file_output"\" -v info -hide_banner"
@@ -53,7 +63,7 @@ for file in **/*.@($extension); do
 
 	is_video=$(ffprobe -i Hair.m4v -v fatal -select_streams V -show_entries stream=codec_type)
 	if [[ -n "$is_video" ]]; then
-		echo "$file is a video file and will not be converted"
+		echo "$file contains a video stream and will not be converted"
 
 		#an Example for converting the audiostreams in a container while copying subtitles and videostreams.
 		#ffmpeg -i Hair.m4v -map 0:a -map 0:s -map 0:v -c:a libopus -c:v copy -c:s copy Hair.mkv -hide_banner -v info